Uber is one of Silicon Valley's fastest growing start ups. But as the company's reach spreads abroad, so do efforts to put the brakes on the ride-sharing service.

A judge ordered a ban on all Uber operations in Spain, joining New Delhi and Thailand on a list of places to outlaw the app overseas. New Delhi put its ban in place yesterday, after a woman accused an uber driver of rape.

And while the company was recently valued at $40 billion, there are questions over whether Uber can live up to the hype if it continues to run into regulation issues not just internationally, but here in the U.S.

New York (CNNMoney) - A rival car service says Uber has been using questionable tactics to recruit its drivers.

Gett, which allows users to order cars with a smartphone app, claims that Uber employees in New York ordered and canceled over a hundred of its cars during a span of three days last week.

The Uber employees received the Gett drivers' cell phone numbers from the order. On Tuesday, an Uber employee texted the drivers in an attempt to recruit them. In screenshots of the texts provided to CNNMoney, Uber offered Gett drivers money to come work for their company.

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